FRAM HM3593A High Mileage Oil Filter: * Industry exclusive, patented time-released gel additive conditions oil through the entire change cycle * Gel additives help balance oil PH, neutralize acids and slow down viscosity increase * Ideal for older engines that are more susceptible to oil break-down * Uses cellulose and synthetic, glass-blended media to provide 3x more engine protection than the average of leading economy oil filters * 95 percent dirt trapping efficiency * Beneficial to extending the life of older engines, our additives help keep oil from breaking down * Additives are time-released within the life of the filter and help maintain viscosity, reduce corrosive engine wear, neutralize acids and keep engine components cleaner